11222101211 has 4 divisors (see below), whose sum is σ = 11223963072. Its totient is φ = 11220239352.

The previous prime is 11222101207. The next prime is 11222101229. The reversal of 11222101211 is 11210122211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11222101211 - 2² = 11222101207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11222151211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921860 + ... + 933953.

It is an arithmetic number, because the mean of its divisors is an integer number (2805990768).

Almost surely, 2^11222101211 is an apocalyptic number.

11222101211 is a deficient number, since it is larger than the sum of its proper divisors (1861861).

11222101211 is an equidigital number, since it uses as much as digits as its factorization.

11222101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861860.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11222101211 its reverse (11210122211), we get a palindrome (22432223422).

It can be divided in two parts, 11 and 222101211, that added together give a palindrome (222101222).

The spelling of 11222101211 in words is "eleven billion, two hundred twenty-two million, one hundred one thousand, two hundred eleven".